[patch 02/15] powerpc: Convert pmc_owner_lock to raw_spinlock
From: Thomas Gleixner <hidden>
Date: 2010-02-18 12:31:51
pmc_owner_lock needs to be a real spinlock in RT. Convert it to raw_spinlock. Signed-off-by: Thomas Gleixner <redacted> --- arch/powerpc/kernel/pmc.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) Index: linux-2.6-tip/arch/powerpc/kernel/pmc.c ===================================================================
--- linux-2.6-tip.orig/arch/powerpc/kernel/pmc.c
+++ linux-2.6-tip/arch/powerpc/kernel/pmc.c@@ -37,7 +37,7 @@ static void dummy_perf(struct pt_regs *r } -static DEFINE_SPINLOCK(pmc_owner_lock); +static DEFINE_RAW_SPINLOCK(pmc_owner_lock); static void *pmc_owner_caller; /* mostly for debugging */ perf_irq_t perf_irq = dummy_perf;
@@ -45,7 +45,7 @@ int reserve_pmc_hardware(perf_irq_t new_ { int err = 0; - spin_lock(&pmc_owner_lock); + raw_spin_lock(&pmc_owner_lock); if (pmc_owner_caller) { printk(KERN_WARNING "reserve_pmc_hardware: "
@@ -59,21 +59,21 @@ int reserve_pmc_hardware(perf_irq_t new_ perf_irq = new_perf_irq ? new_perf_irq : dummy_perf; out: - spin_unlock(&pmc_owner_lock); + raw_spin_unlock(&pmc_owner_lock); return err; } EXPORT_SYMBOL_GPL(reserve_pmc_hardware); void release_pmc_hardware(void) { - spin_lock(&pmc_owner_lock); + raw_spin_lock(&pmc_owner_lock); WARN_ON(! pmc_owner_caller); pmc_owner_caller = NULL; perf_irq = dummy_perf; - spin_unlock(&pmc_owner_lock); + raw_spin_unlock(&pmc_owner_lock); } EXPORT_SYMBOL_GPL(release_pmc_hardware);